Kubernetes Certification
Certified Kubernetes Administrator(Cka)

Damian Igbe

Last Update:

Aug. 31, 2022

Course Overview

The purpose of the Certified Kubernetes Administrator (CKA) program is to provide assurance that CKAs have the skills, knowledge, and competency to perform the responsibilities of Kubernetes administrators.

Suggested Prerequisite Courses

  • Docker Essentials
  • Docker Admin

Manage role-based access control (RBAC)

Use Kubeadm to install a basic cluster

manage Highly-available Kubernetes cluster

provision underlying infrastructure to deploy a K8s Cluster

Perform a version upgrade on a Kubernetes using Kubeadm





Testing the video from Mega

Persistent Volumes

This document describes persistent volumes in Kubernetes. Familiarity with volumes is suggested.


Managing storage is a distinct problem from managing compute instances. The PersistentVolume subsystem provides an API for users and administrators that abstracts details of how storage is provided from how it is consumed. To do this, we introduce two new API resources: PersistentVolume and PersistentVolumeClaim.

PersistentVolume (PV) is a piece of storage in the cluster that has been provisioned by an administrator or dynamically provisioned using Storage Classes. It is a resource in the cluster just like a node is a cluster resource. PVs are volume plugins like Volumes, but have a lifecycle independent of any individual Pod that uses the PV. This API object captures the details of the implementation of the storage, be that NFS, iSCSI, or a cloud-provider-specific storage system.

PersistentVolumeClaim (PVC) is a request for storage by a user. It is similar to a Pod. Pods consume node resources and PVCs consume PV resources. Pods can request specific levels of resources (CPU and Memory). Claims can request specific size and access modes (e.g., they can be mounted ReadWriteOnce, ReadOnlyMany or ReadWriteMany, see AccessModes).

While PersistentVolumeClaims allow a user to consume abstract storage resources, it is common that users need PersistentVolumes with varying properties, such as performance, for different problems. Cluster administrators need to be able to offer a variety of PersistentVolumes that differ in more ways than size and access modes, without exposing users to the details of how those volumes are implemented. For these needs, there is the StorageClass resource.

See the detailed walkthrough with working examples.

On replicasets and videos

  • Instructor :Damian Igbe
  • Lectures :40
  • Duration :40
  • Enrolled :150 students
  • Language :English


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